Response Analysis of Hollow Core FRP Bridge Deck Panel with Steel Girder under Moving Load

Fiber Reinforced Plastics bridge deck is fabricated with highly complex material and geometric configurations to achieve lightweight properties as well as high specific strength, therefore, needs special attention from the point of view of analysis and design. The present study emphasises the dynamic analysis of glass fiber reinforced plastics (GFRP) hollow core bridge deck panel with steel girders under class B train load as per specification of Indian Roads Congress (IRC 6-2017) using the ANSYS Academic Research Mechanical, Release 23.2. The mode superposition method is used for the formulation of transient loading. The modal analysis is carried out extensively by experimental and numerical procedures in the present paper. The numerical simulation results of deck panel made of isotropic material are verified with previous studies as well as experiments conducted using Laser Scanning Vibrometer and impact hammer. The transient dynamic response of deck panel is analysed using ANSYS software package. Finally, the parametric numerical simulation of GFRP deck- steel girder panel is carried out by varying different parameters in ANSYS software platform, and analysed thoroughly for free vibration and forced vibration responses under class B train load as per IRC 6-2017 for varying speeds. The output of experimental modal analysis tally very well with the numerical simulation. The parametric studies reveal the pattern and extent of variation of response with the variation of structural data as well as velocity of vehicles.